Ideal for enthusiasts looking for an upgrade or customization option, the Sig Sauer MCX-Spear LT Upper/Conversion Kit in 5.56 NATO with an 11.5" barrel is a state-of-the-art solution for enhancing the performance and versatility of any M4/AR15 spec lower assembly. This kit is designed to provide superior functionality and adaptability, featuring a suite of advanced features aimed at improving reliability, durability, and overall shooting experience.
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The MCX-Spear LT Upper/Conversion Kit stands out with its dual rod recoil assembly, which innovatively eliminates the traditional buffer system, allowing for a more compact and efficient design. The M4 adapter enhances the kit's versatility, enabling the use of Pic rail folding stocks and thereby expanding configuration options. An adjustable gas system allows for precise tuning, especially when using suppressors, optimizing performance under varying conditions.
A hallmark of this kit is its quick-change barrel design, allowing users to easily switch calibers and barrel lengths, adapting the firearm to different roles or preferences. The gas piston operating system minimizes carbon fouling on critical parts, extending the maintenance intervals and overall life of the firearm. Designed for durability, the kit's components are engineered to endure 20k rounds before requiring any part replacements, supported by a next-gen suppressor designed QD flash hider for seamless suppressor integration.
Sig Sauer MCX-Spear LT Specifications
Model: SIG MCX-SPEAR LT
Caliber: 5.56 NATO
Barrel Length: 11.5"
Overall Length: 19.75"
Weight: 4lb, 7oz
Barrel: Nitride Coated Cold Hammer Forged
Barrel Rifling Type: Hammer Forged
Twist Rate: 1:7
Operating System: Gas Piston
Muzzle Device: 3-Prong/SIG Suppressor QD
Muzzle Thread Pitch: 1/2-28
Handguard Length: 10.23"
Handguard Inside Diameter: 1.48"
Handguard Material: Aluminum
Receiver Finish: Black Anodized
Bolt Carrier Group Included: Yes
Bolt Carrier Finish: DLC
Charging Handle Included: Yes
Forward Assist: Yes
Free Floated Handguard: Yes
More Information
Barrel Length
11.5
Caliber
5.56
Condition
New in Box
Finish Per Color
Black
Manufacturer
Sig Sauer
Manufacturer Part Number
UAMCX-556N-11B-LT-BLK
Model
MCX-Spear LT Upper/Conv. Kit
Type
Uppers
UPC
798681682539
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
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